21000100222002 has 16 divisors (see below), whose sum is σ = 45818400484512. Its totient is φ = 6363666733920.

The previous prime is 21000100221973. The next prime is 21000100222019. The reversal of 21000100222002 is 20022200100012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159091668283 + ... + 159091668414.

It is an arithmetic number, because the mean of its divisors is an integer number (2863650030282).

Almost surely, 2^{21000100222002} is an apocalyptic number.

21000100222002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21000100222002 is an abundant number, since it is smaller than the sum of its proper divisors (24818300262510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21000100222002 is a wasteful number, since it uses less digits than its factorization.

21000100222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318183336713.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21000100222002 its reverse (20022200100012), we get a palindrome (41022300322014).

The spelling of 21000100222002 in words is "twenty-one trillion, one hundred million, two hundred twenty-two thousand, two".